Java tutorial
/* * Copyright 2012 Google Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.cfc.needblood; import static com.cfc.needblood.CommonUtilities.SENDER_ID; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.Context; import android.content.Intent; import android.graphics.BitmapFactory; import android.media.Ringtone; import android.media.RingtoneManager; import android.net.Uri; import android.support.v4.app.NotificationCompat; import android.util.Log; import com.google.android.gcm.GCMBaseIntentService; import com.google.android.gcm.GCMRegistrar; /** * IntentService responsible for handling GCM messages. */ public class GCMIntentService extends GCMBaseIntentService { private static final String TAG = "GCMIntentService"; public GCMIntentService() { super(SENDER_ID); } @Override protected void onRegistered(Context context, String registrationId) { Log.i(TAG, "Device registered: regId = " + registrationId); // Update our database with the registration ID String fbId = ((NeedBloodApplication) getApplication()).getUserID(); String bloodType = ((NeedBloodApplication) getApplication()).getBloodType(); ServerUtilities.register(context, registrationId, fbId, bloodType); } @Override protected void onUnregistered(Context context, String registrationId) { Log.i(TAG, "Device unregistered"); if (GCMRegistrar.isRegisteredOnServer(context)) { ServerUtilities.unregister(context, registrationId); } else { // This callback results from the call to unregister made on // ServerUtilities when the registration to the server failed. Log.i(TAG, "Ignoring unregister callback"); } } @Override protected void onMessage(Context context, Intent intent) { Log.i(TAG, "Received message"); // Change your message whether you want static message or // message depending on what you send from the server. // Eg. Event name, venue, time, etc in JSON format String message = getString(R.string.notification_message); // String message = intent.getExtras().getString("JSON KEY"); // notifies user generateNotification(context, message); } @Override public void onError(Context context, String errorId) { Log.i(TAG, "Received error: " + errorId); } @Override protected boolean onRecoverableError(Context context, String errorId) { // log message Log.i(TAG, "Received recoverable error: " + errorId); return super.onRecoverableError(context, errorId); } /** * Issues a notification to inform the user that server has sent a message. */ private static void generateNotification(Context context, String message) { long when = System.currentTimeMillis(); Intent notificationIntent = new Intent(context, MainActivity.class); // set intent so it does not start a new activity notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP); PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, PendingIntent.FLAG_CANCEL_CURRENT); NotificationManager notificationManager = (NotificationManager) context .getSystemService(Context.NOTIFICATION_SERVICE); NotificationCompat.Builder builder = new NotificationCompat.Builder(context); // Change the icons to conform Android's design guildeline builder.setContentIntent(contentIntent).setSmallIcon(R.drawable.ic_launcher) .setLargeIcon(BitmapFactory.decodeResource(context.getResources(), R.drawable.bd_icon)) .setTicker(message).setWhen(when).setAutoCancel(true) .setContentTitle(context.getString(R.string.app_name)) .setContentText(context.getString(R.string.notification_message)); Notification notification = builder.build(); notificationManager.notify(0, notification); // Notification sound, comment out if do not need Uri ringtone = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); Ringtone r = RingtoneManager.getRingtone(context, ringtone); r.play(); } }